#include "../common/dispatcher.hpp"
#include "../client/rpc_client.hpp"
#include "rpc_router.hpp"
#include "rpc_registry.hpp"
#include "rpc_topic.hpp"

namespace bitrpc
{
    namespace server
    {
        // 注册中心服务端：只需要针对服务注册与发现请求进行处理即可
        class RegistryServer
        {
        public:
            using ptr = std::shared_ptr<RegistryServer>;
            RegistryServer(int port) : _pd_manager(std::make_shared<PDManager>()),
                                       _dispatcher(std::make_shared<bitrpc::Dispatcher>())
            {
                auto service_cb = std::bind(&PDManager::onServiceRequest, _pd_manager.get(),
                                            std::placeholders::_1, std::placeholders::_2);
                _dispatcher->registerHandler<ServiceRequest>(MType::REQ_SERVICE, service_cb);

                _server = bitrpc::ServerFactory::create(port);
                auto message_cb = std::bind(&bitrpc::Dispatcher::onMessage, _dispatcher.get(),
                                            std::placeholders::_1, std::placeholders::_2);
                _server->setMessageCallback(message_cb);

                auto close_cb = std::bind(&RegistryServer::onConnShutdown, this, std::placeholders::_1);
                _server->setCloseCallback(close_cb);
            }
            void start()
            {
                _server->start();
            }

        private:
            void onConnShutdown(const BaseConnection::ptr &conn)
            {
                _pd_manager->onConnShutdown(conn);
            }

        private:
            PDManager::ptr _pd_manager;
            Dispatcher::ptr _dispatcher;
            BaseServer::ptr _server;
        };

        class RpcServer
        {
        public:
            using ptr = std::shared_ptr<RpcServer>;
            // rpc——server端有两套地址信息：
            //   1. rpc服务提供端地址信息--必须是rpc服务器对外访问地址（云服务器---监听地址和访问地址不同）
            //   2. 注册中心服务端地址信息 -- 启用服务注册后，连接注册中心进行服务注册用的
            RpcServer(const Address &access_addr,
                      bool enableRegistry = false,
                      const Address &registry_server_addr = Address()) : _enableRegistry(enableRegistry),
                                                                         _access_addr(access_addr),
                                                                         _router(std::make_shared<bitrpc::server::RpcRouter>()),
                                                                         _dispatcher(std::make_shared<bitrpc::Dispatcher>())
            {

                if (enableRegistry)
                {
                    _reg_client = std::make_shared<client::RegistryClient>(
                        registry_server_addr.first, registry_server_addr.second);
                }
                // 当前成员server是一个rpcserver，用于提供rpc服务的
                auto rpc_cb = std::bind(&RpcRouter::onRpcRequest, _router.get(),
                                        std::placeholders::_1, std::placeholders::_2);
                _dispatcher->registerHandler<bitrpc::RpcRequest>(bitrpc::MType::REQ_RPC, rpc_cb);

                // 创建server
                _server = bitrpc::ServerFactory::create(access_addr.second);
                auto message_cb = std::bind(&bitrpc::Dispatcher::onMessage, _dispatcher.get(),
                                            std::placeholders::_1, std::placeholders::_2);
                _server->setMessageCallback(message_cb);
            }

            void registerMethod(const ServiceDescribe::ptr &service)
            {
                if (_enableRegistry)
                {
                    _reg_client->registryMethod(service->method(), _access_addr);
                }
                _router->registerMethod(service);
            }
            void start()
            {
                _server->start();
            }

        private:
            bool _enableRegistry;
            Address _access_addr;
            client::RegistryClient::ptr _reg_client;
            RpcRouter::ptr _router;
            Dispatcher::ptr _dispatcher;
            BaseServer::ptr _server;
        };

        class TopicServer
        {
        public:
            using ptr = std::shared_ptr<TopicServer>;
            TopicServer(int port) : _topic_manager(std::make_shared<TopicManager>()),
                                    _dispatcher(std::make_shared<bitrpc::Dispatcher>())
            {
                auto topic_cb = std::bind(&TopicManager::onTopicRequest, _topic_manager.get(),
                                          std::placeholders::_1, std::placeholders::_2);
                _dispatcher->registerHandler<TopicRequest>(MType::REQ_TOPIC, topic_cb);

                _server = bitrpc::ServerFactory::create(port);
                auto message_cb = std::bind(&bitrpc::Dispatcher::onMessage, _dispatcher.get(),
                                            std::placeholders::_1, std::placeholders::_2);
                _server->setMessageCallback(message_cb);

                auto close_cb = std::bind(&TopicServer::onConnShutdown, this, std::placeholders::_1);
                _server->setCloseCallback(close_cb);
            }
            void start()
            {
                _server->start();
            }

        private:
            void onConnShutdown(const BaseConnection::ptr &conn)
            {
                _topic_manager->onShutdown(conn);
            }

        private:
            TopicManager::ptr _topic_manager;
            Dispatcher::ptr _dispatcher;
            BaseServer::ptr _server;
        };
    }
}